<template>
  <header class="header">
    <h1>todos</h1>

    <input v-model="checkAll" id="toggle-all" class="toggle-all" type="checkbox" />
    <label for="toggle-all"></label>
    <input class="new-todo" placeholder="输入任务名称-回车确认" autofocus v-model.trim="name" @keyup.enter="add" />
  </header>
</template>

<script>
export default {
  data() {
    return {
      name: ''
    }
  },
  props: {
    list: {
      required: true
    }
  },
  methods: {
    add() {
      if (this.name == '') return alert('请输入内容')
      this.$emit('add', this.name)
      this.name = ''
    }
  }
  ,
  computed: {
    checkAll: {
      get() {
        return this.list.every(v => v.isDone)
      },
      set(val) {
        this.$emit('check', val)
      }
    }
  }
}
</script>